Allen County Climate
Allen County, Kansas
Avg Annual Temp
56.0°F
Annual Precip
42.2"
Annual Snowfall
8.6"
Extreme Heat Days
45.150000000000006
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Allen County Weather
Warmer and wetter than the national average
Allen County maintains an annual average temperature of 56.0°F, placing it several degrees above the national median. This humid subtropical climate receives 42.2 inches of rain annually, significantly outpacing the national precipitation trend.
A warm outlier in the Sunflower State
The county's average temperature of 56.0°F is notably higher than the Kansas state average of 54.8°F. Residents also experience 42.2 inches of precipitation, making it one of the wetter regions compared to the state average of 30.3 inches.
Warmer and wetter than northern neighbors
Allen County stays warmer on average than nearby Anderson County, which clocks in at 55.2°F. It also receives about one inch more annual rainfall than Anderson, reinforcing its status as a lush eastern Kansas corridor.
Hot summers with manageable winter snow
Summer heat is intense with 45 days reaching 90°F or higher and a July average of 79.1°F. Winters remain relatively mild, seeing only 8.6 inches of snow compared to the much heavier totals found in northern Kansas.
Prepare for humidity and summer heat
Residents should prioritize high-efficiency cooling systems to manage the 45 extreme heat days each year. With over 42 inches of rain, ensuring proper home drainage and gutter maintenance is essential for the wet spring months.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.